Smoker&#39;s pipe and filter



y 23, 1940- c. J. HOHMAN ET AL 2,208,763

' SMOKERS PIPE AND FILTER Filed Feb. 7, 1938 INVENTOR W/% 91 Patented July 23, 1940 r; s

*' m STATES PATEN oFFice 7 2,208,763 SMOKERS PlPEAND FILTER Application February 7, 1938, Serial No. 189,141

3; Claims.

The device, the subject of this invention, is a smokers pipe having a number of peculiar advantages and the definite objects of the invention are to provide a pipe wherein- 7 Means will be provided for filtering the smoke and for removing the foreign matter and moisture therefrom. I

Means will be provided for readily inserting and removingthe filter medium. 10 Means will be provided for engaging the filter so that its removal willbe readily accomplished and Without the use of additional instrumentalities. k

Means will be provided for dissipating much of the heat occasioned by the burning tobacco and p v The construction will be so designed as to maintain the accustomed symmetry or a'pipe so that'the pipe will have the general appearance 20 of the smokers pipes of accepted design.

The means for accomplishing all of the purposes described and others not specifically'referred to, will be fully set forth as the specification progresses and the following is what we con.-

25 sider the best means of carrying out our inven tion and the accompanying drawing should be referred to for a complete understanding'of the specification which follows.

In the drawing- 30 Figure 1 shows a side elevation partly in sec-- tion of a completed pipe, the remainingfigures are on a larger scale. I

Figure 2 is a partial sectional and fractured view of a filter. 35 Figure 3 is an end elevation of the filter. Figure l is a side elevation of the filter and its retaining means.

Figure 5 is an end elevation of the retaining means. H 40 Figure 6 is an end view of; a pipe. n

Figure 7 .is a top plan view of the closure plug and filter retaining means. Figure8 is a side elevation thereof. Figure 9 is a side elevation of. the metallic member in which the filter. is retained; Figure 10 is a side elevation of a scoop of modi-; fied construction.

Figure 11, is an end view thereof. 7

50 Figure 12 is a sectional and fractured view ofa plug and scoop of modified construction- V Figure 13 is a sectional view of a pipe whereinthe plugopening is omitted. Q f Figure 14 is a sideelevation of the plugs 55 shown inFigHrGlZ- Figure 15 is a sectional view of a plug of modified construction.

Similar reference numerals indicate-like parts i in all the figures where they appear.

At I- we show a pipe bowl of ordinary con-' 5 struction, shape and size, but attention is called to'the' fact that the smoke perforation 2 provided at the bottom of the bowl and in the tobacco chamber 3, is arranged in a rather unusual position. This perforation is off center slanting l0 backward and the reason for this peculiar location is to prevent this perforation 2 becoming clogged when tobacco is introduced into the pipe and for the further purpose of imparting to the smoke stream the longest possible path. 15

Formed integral with the bowl I is the stem portion 4 of the pipe. This member'may also be of ordinary shape and size although it is desirable that it be made of suflicient diameter to provide "for; the introduction of the parts that will be later described as arranged therein.

The bit or mouthpiece 5 of the pipe is also of conventional design, shape and size and need not be varied to operate successfully with our device.

In the stem l offthe pipe we arrange a tubular metallic member 6 which we prefer should be formed of aluminum and at one end of this metallic member t, we provide a cross screw thread 1 upon which the bit or mouthpiece 5 will be engaged.

The tubular member 6' extends back beyond the perforation Zinthe bowl l and is also provided with a perforation 8 which will register with the perforation 2, infact it is our practice to insert the tubular member i5 securing this member reliably in position by means of a suitable cement or otherwise and to then bore the bottom of the bowl and the tubular member to produce the perforation 2--8. v I

The end of the tubular member next adjacent to the perforation 8 is bevelled as shown at 9 for a purpose that shall appear later.

Low down on the outside of the bowl I and at the bowl end of the stem portion 4, we provide a recess or countersink for the reception ofa button or plug it. -This plug which is shown on a large scale in Figures 7.and 8 will be shaped in: a manner to fit closely within the recess that has been produced and to conform generally to the outline of the pipe. This button may be made of any suitable material .such as Bakelite,

hard rubber or even wood, or metal. Secured intheplug I0 is a metallic member H which wewill referlto as a scoop and this 5 i scoop is secured within the plug I so as to be inseparable therefrom. To insert and remove the plug in we provide a pair of wings as shown at I2 and I3 which are formed integral and extend transversely through the plug I0 and through the recess I4 which have been provided in the side walls of the scoop H. These wing members and their tranverse bar which is indicated by the dotted lines I5 in Figure '7, insure the close and permanent association of the scoop and the plug I0 and at the same time provide means for removing the plug and the scoop as previously referred to.

To assure a close airtight association of the plug I0 and the tubular member 6, a bevelled recess is provided in the plug I0 adjacent to the scoop I I and it is into this recess that the bevelled edge 9 of the tubular member I5 is received.

The scoop I I is an incomplete cylindrical member as shown in Figures 4 and. 5 and it is our intention to make this member of very thin spring steel so that it will occupy a minimum of space and yet reliably engage the filter member which is to be placed therein.

The filter member which we employ is of peculiar construction and is shown in Figures 2 and 4. This filter which is a tubular member is formed of two more or less independent pieces of absorbent material. The pieces which form the filter member are a relatively wide ribbon I6 and a relatively narrow ribbon II. These two ribbons are wound upon a mandrel so that the narrow ribbon I1 will occupy a space at about midwidth the wide ribbon I6 and will project inward toward the axial center of the tube, both ribbons because of the winding being arranged on a spiral.

When the winding is completed the filter tube may be encased in a nonabsorbent wrapper or may be treated with a nonabsorbent and adhesive coating so that the filter will retain its shape.

In Figure 4 the completed filter is shown at I8 and through the outer wall of the filter we produce a perforation I9 which when the filter is in place in the tubular member 6 will coincide with the perforations 2-8 in the bowl and in the tube.

The object of the inner ribbon I! which may be of greater thickness than the outer ribbon I6 is to provide a plurality of barriers in the smoke passage which will insure that the smoke passing through the filter will be cleaned of all suspended particles and that the moisture will be removed therefrom and it will be understood that the length of this filter tube will be the maximum length possible with the tube 6 and the bore in the pipe stem and bit and it is further emphasized that the reason for the side perforation I9 in the filter tube is to assure that all of the smoke and the products of combustion of the tobacco will pass through the filter tube.

May we again call attention to the arrangement of the smoke passage 2--8 in the bottom of the tobacco recess 3 and it will be noted that this smoke passage is at the back of the bowl and slants backward in direct contra distinction to the usual arrangement of smoke passages which are either in the bottom of the bowl or at the forward side of the tobacco recess.

This arrangement of the smoke passage is not accidental, but as previously stated the objects are to prevent the smoke passage being clogged when the bowl is packed with tobacco to pre: vent moisture readily entering the smoke passage and to provide the longest possible path of travel for the smoke and further it is believed as a result of our experiments with a pipe constructed as here shown, that arranging this smoke passage at an angle makes the tobacco burn more evenly in the pipe bowl preventing to an extent at least the formation of a hot core through the mass of tobacco in the bowl.

The scoop shown at II in Figures 1, 4, 5, '7 and 8 is a one piece scoop but we have found that the construction of this part may be materially simplified and cheapened if this scoop is made in two parts and in Figures 10 and 11 we show a scoop so constructed, the separate parts of which are connected at 20 and 2|.

The operation and the location of this device is similar to the device indicated at II, the only difference being in its construction.

In continuing our experiments in the manufacture of pipes as here shown, we have found a certain amount of mechanical difficulty in the placing and shaping of the wings I2 and I3 and the bar I5, we have also found that unless great care is taken, the heat necessary in molding the base material to form the plug I0, may soften or even burn the metal of the wings I2, I3 and the bar I 5. To overcome all of these possibilities and to simplify the construction of our device, we have found it possible to omit these wings and in Figure 12, we show a plug 22 wherein the scoop II is retained by a short pin or bar 23 which is imbedded in the material from which the plug 22 is formed, the plug 22 is provided in this construction with bevelled recesses 24 and 25 which assist in the removal of the plug from the pipe and make theme of the wings I2 and I3 unnecessary. This may prove to be the preferred construction.

We have found that certain of the advantages of our device may be obtained in a very simplified manner, of course wherever parts have been omitted advantages and functions of the parts are also absent but nevertheless the pipe as shown in Figure 13 has proven satisfactory to the extent possible with such a simplified construction, in

this construction the pipe bowl is shown at 2B, the stem at 21 and the bit at 28 and it will be noted that the tobacco recess 29 is provided with a smoke passage 30 arranged much in the same position as found in ordinary pipes.

In this construction we maintain our metallic tubular member though somewhat changing its construction and therefore this member is indicated by the reference character 3i, the forward or bit end of this tubular member is not provided with screw threads, the bit 28 engaging upon the forward extension of the tubular member 3| by frictional engagement, the extension for the reception of the bit is shown at 32.

The filter 33 used in this device may be the same filter as that used in the previous construction described but this filter projects from the bit end of the tube 3| and the projecting end is received in a recess in the bit 28, the reference character 34 indicates the projecting end of the filter and the recess in the bit in which this projection is received.

In our experiments we have found that it is sometimes difiicult to withdraw the filter and this condition will arise if the filters are tightly wound of a less than desirable diameter or become quite heavily sogged with moisture. To overcome this difiiculty we may provide a hook as shown at 35 in Figure 14, this-hook being formed as a projection from the scoop II and in this figure w show the position and arrangement of the finger recesses one of which is indicated at 25.

Another way to assure a convenient withdrawal of the filter is shown in Figure 15. Here the cap 22 is provided with a coarse screw 36, the head of which is molded into the cap and in this construction the head of the screw may be extended to provide the securing bar 31 and a plurality of prongs or projections 38 and 39 which will enter the tube 6 and retain the cap in position.

It will of course be understood that the screw 36 is screw threaded into the filter l8 and behind the opening I6 therein, as this screw 36 is a coarse threaded screw or self threading screw, it will not be necessary to thread the end of the filter merely screwing the filter upon the screw 36 will insure a sufliciently firm engagement of the parts.

Having carefully and fully described our invention what we desire to secure by Letters Patent is:

1. A smokers pipe having a stem and a bowl attached to said stem, a screw threaded metallic member in said stem and projecting therefrom, a bit screw threaded upon the projecting end of said metallic member, said metallic member be ing provided with a perforation through one side thereof and in combination therewith, a filter having a non absorbent casing one side of which is provided with a perforation in alignment with the perforation in said metallic member and means for retaining said filter casing in said having .a metallic member attached thereto and adapted to mechanically engage said filter for removing said filter from said tube.

2. A pipe having a bowl, a stem and a bit, a metallic means in said stem and projecting therefrom to receive said bit, said metallic means being provided with a perforation through one side and in combination therewith, a filtering means comprising a non absorbent casing having a perforation' in one side thereof and filtering means therein, means for retaining said filter in said metallic member, said means comprising a relatively short screw threaded member temporarily secured to said filter for withdrawing said filter from said metallic member and a plug secured to said screw threaded member and having outwardly extending means for operating said plug.

3. In a smokers pipe having a bowl, a stem and a bit of conventional design in conventional relation and a metallic tubular member arranged within the stem and bit of the pipe, a scoop shaped member frictionally engaged in said tubular member, a plug secured to said scoop for closing the end of said tubular member and a metallic means passing through said plug and said scoop for retaining said scoop on said plug and outwardly extending wings formed integral with said metallic means for removing said plug and said scoop.

ABRAHAM RIBACK. CHARLES J. HOHMAN. 

